The October Challenge, solution, and winner

The October Challenge:
There is a building with 2 floors. Downstairs there are 3 light switches, and upstairs there is one light bulb. How do you know which light switch turns on the light bulb if you can only go upstairs once?
NOTE: You are alone and you cannot see the light from downstairs?


Solution:
You turn the first light switch on and wait 10 minutes. Then you turn the second light switch on and go upstairs. If the light is on, it's the second switch. If the light is off, you touch the bulb. If the bulb is hot, its the first switch. If the bulb is cold, it's the third light switch.

Participants who submitted the correct answer:


Winner:
(picture will be posted!)